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Mirrors > Home > HSE Home > Th. List > occon3 | Structured version Visualization version GIF version |
Description: Hilbert lattice contraposition law. (Contributed by Mario Carneiro, 18-May-2014.) (New usage is discouraged.) |
Ref | Expression |
---|---|
occon3 | ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) ↔ 𝐵 ⊆ (⊥‘𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ococss 29328 | . . . 4 ⊢ (𝐵 ⊆ ℋ → 𝐵 ⊆ (⊥‘(⊥‘𝐵))) | |
2 | 1 | adantl 485 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → 𝐵 ⊆ (⊥‘(⊥‘𝐵))) |
3 | ocss 29320 | . . . 4 ⊢ (𝐵 ⊆ ℋ → (⊥‘𝐵) ⊆ ℋ) | |
4 | occon 29322 | . . . 4 ⊢ ((𝐴 ⊆ ℋ ∧ (⊥‘𝐵) ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → (⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴))) | |
5 | 3, 4 | sylan2 596 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → (⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴))) |
6 | sstr2 3894 | . . 3 ⊢ (𝐵 ⊆ (⊥‘(⊥‘𝐵)) → ((⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴) → 𝐵 ⊆ (⊥‘𝐴))) | |
7 | 2, 5, 6 | sylsyld 61 | . 2 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → 𝐵 ⊆ (⊥‘𝐴))) |
8 | ococss 29328 | . . . 4 ⊢ (𝐴 ⊆ ℋ → 𝐴 ⊆ (⊥‘(⊥‘𝐴))) | |
9 | 8 | adantr 484 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → 𝐴 ⊆ (⊥‘(⊥‘𝐴))) |
10 | id 22 | . . . 4 ⊢ (𝐵 ⊆ ℋ → 𝐵 ⊆ ℋ) | |
11 | ocss 29320 | . . . 4 ⊢ (𝐴 ⊆ ℋ → (⊥‘𝐴) ⊆ ℋ) | |
12 | occon 29322 | . . . 4 ⊢ ((𝐵 ⊆ ℋ ∧ (⊥‘𝐴) ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → (⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵))) | |
13 | 10, 11, 12 | syl2anr 600 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → (⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵))) |
14 | sstr2 3894 | . . 3 ⊢ (𝐴 ⊆ (⊥‘(⊥‘𝐴)) → ((⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵) → 𝐴 ⊆ (⊥‘𝐵))) | |
15 | 9, 13, 14 | sylsyld 61 | . 2 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → 𝐴 ⊆ (⊥‘𝐵))) |
16 | 7, 15 | impbid 215 | 1 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) ↔ 𝐵 ⊆ (⊥‘𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ⊆ wss 3853 ‘cfv 6358 ℋchba 28954 ⊥cort 28965 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-resscn 10751 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-mulcom 10758 ax-addass 10759 ax-mulass 10760 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rnegex 10765 ax-rrecex 10766 ax-cnre 10767 ax-pre-lttri 10768 ax-pre-lttrn 10769 ax-pre-ltadd 10770 ax-pre-mulgt0 10771 ax-hilex 29034 ax-hfvadd 29035 ax-hv0cl 29038 ax-hfvmul 29040 ax-hvmul0 29045 ax-hfi 29114 ax-his1 29117 ax-his2 29118 ax-his3 29119 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-nel 3037 df-ral 3056 df-rex 3057 df-reu 3058 df-rmo 3059 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-op 4534 df-uni 4806 df-iun 4892 df-br 5040 df-opab 5102 df-mpt 5121 df-id 5440 df-po 5453 df-so 5454 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7148 df-ov 7194 df-oprab 7195 df-mpo 7196 df-er 8369 df-en 8605 df-dom 8606 df-sdom 8607 df-pnf 10834 df-mnf 10835 df-xr 10836 df-ltxr 10837 df-le 10838 df-sub 11029 df-neg 11030 df-div 11455 df-2 11858 df-cj 14627 df-re 14628 df-im 14629 df-sh 29242 df-oc 29287 |
This theorem is referenced by: chsscon2i 29498 chsscon2 29537 |
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